WO2023214920A1 - Procédé d'ionisation d'un fluide - Google Patents
Procédé d'ionisation d'un fluide Download PDFInfo
- Publication number
- WO2023214920A1 WO2023214920A1 PCT/SE2023/050419 SE2023050419W WO2023214920A1 WO 2023214920 A1 WO2023214920 A1 WO 2023214920A1 SE 2023050419 W SE2023050419 W SE 2023050419W WO 2023214920 A1 WO2023214920 A1 WO 2023214920A1
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- electrodes
- container
- pair
- fluid
- ionization
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/48—Generating plasma using an arc
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
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- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
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- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/10—Preparation of ozone
- C01B13/11—Preparation of ozone by electric discharge
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T19/00—Devices providing for corona discharge
- H01T19/04—Devices providing for corona discharge having pointed electrodes
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- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
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- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
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- B01J2219/00763—Baffles
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- B01J2219/00772—Baffles attached to the reactor wall inclined in a helix
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- B01J2219/0809—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges involving electrodes employing two or more electrodes
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- B01J2219/0837—Details relating to the material of the electrodes
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- B01J2219/0845—Details relating to the type of discharge
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
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- B01J2219/0862—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy creating magnetic fields employing multiple (electro)magnets
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/18—Details relating to the spatial orientation of the reactor
- B01J2219/182—Details relating to the spatial orientation of the reactor horizontal
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H2245/00—Applications of plasma devices
- H05H2245/20—Treatment of liquids
Definitions
- the invention relates to a method for ionization of a fluid in a gaseous state.
- Ionization is a process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons, often in conjunction with other chemical changes.
- the resulting electrically charged atom or molecule is called an ion.
- the technical field of the invention regards ionization of the fluid by subjecting the fluid to an electric arc.
- the fluid in gaseous state used as input to the ionization method may be air.
- the electric arc is sufficiently strong, conditions are created for the gas to become separated into positive ions and electrons, wherein the air is ionized.
- an ionized gas is to clean a fluid, such as a gas, that may be air, or a liquid such as industrial process liquids and all kinds of water and wastewater and other liquids
- a fluid such as a gas
- the ionized gas may be used for eliminating organic and mineral impurities or pollutants.
- organic matter may be bacteria, viruses, other harmful microorganisms, and some organic chemical substances. Also, for separation by sedimentation of the inorganic or mineral substances such as metal.
- WO2018/211309 discloses an electric arc ionization reactor and a method for generating ozone by using air.
- the reactor is elongated and has an inner circular cross section shape.
- An inlet for entry of air is provided at a first end of the elongated reactor and an outlet is provided at a second end of the elongated reactor.
- a pair of needle electrodes are arranged opposite each other and at a distance from each other in a transverse direction of the elongated reactor.
- An alternating current with high voltage is supplied to the electrodes for generating an arc between the electrodes.
- US20020170817 discloses the generating of a corona or other electric discharge and provides for the passing of a gas through the corona to effect ionizing, creating of ozone or the like.
- a corona discharge or other electric discharge
- a gas is passed through the corona discharge; mixing of the gas may be provided by motionless mixing technique for one or more purposes, such as to assure maximum exposure of the gas to the corona discharge, to provide uniform temperature of the gas, to cool the corona generator, etc.
- JP0761801 discloses an ozonizing unit providing a high ozone concentration by connecting a high-frequency power source across prescribed electrodes, carrying out the corona discharge and regulating the electric current while making the produced ozone gas flow in a spiral form and preventing ozone from being destroyed.
- US4960569A discloses corona discharge ozonator is provided that comprises a first electrode, a second electrode and a dielectric material disposed between the electrodes.
- An ozonization chamber is formed between one of the electrodes and the dielectric material and defines a fluid flow path.
- a plurality of thermally-conducting solids are within the fluid flow path.
- US6451208 discloses a device for applying electrostatic and magnetic fields to a fluid includes an outer conduit and an inner conduit forming a fluid passageway therebetween.
- the inner conduit is connected to a DC power source and the outer conduit along with electrode needles in electrical communication therewith are connected to ground.
- a baffle is positioned within the passageway to impart a spiral motion to the fluid flowing therein.
- a first object of the invention is to achieve a method for ionizing a fluid flow, which creates conditions for a high ionization efficiency.
- the object is achieved by a method according to claim 1 .
- a method for ionization of a fluid wherein the fluid is conveyed inside of an elongated container in a gaseous state, wherein an inner surface of a wall of the elongated fluid container has a circular shape in a cross section transverse to a longitudinal direction of the container, wherein an inner diameter of the container is in a range of 10-50 mm, wherein a first pair of electrodes are arranged in the container opposite each other and at a distance from each other in a transverse direction of the elongated container, wherein the method comprises the steps of supplying a voltage to each electrode in the first pair of electrodes in a range of 2 to 15 kV, especially in a range of 5 to 10 kV, and preferably around 7,5 kV so that electric discharges take place from the electrodes for ionization of the fluid, supplying the fluid with a flow rate in a range of 5-80 litre/min to an inlet
- a selection of a certain dimension range of a container and a specific combination of parameters and certain parameter ranges for operation of the device has turned out to provide for a high ionization efficiency in a cost-efficient way.
- the cost-efficiency may be in production and/or operation of the device.
- the method creates conditions for creating a configuration of the first arc structure that is especially effective in ionization of the fluid.
- the method comprises the step of high frequency charging the electrodes in the first pair of electrodes to an extent that the electric discharges comprise a plurality of independent semi arc structures formed at the same time from each one of the electrodes.
- both electrodes exchange electrons/positrons with the environment of the respective electrode eventually leading to a discharge and creation of independent semi arc structures in the vicinity of the respective electrode, in interaction with the conveyed fluid.
- the method creates conditions for creating electric discharges forming a configuration of a first independent semi arc structure that is especially effective in ionization of the fluid. It may be achieved by supplying a voltage of a certain magnitude to the first pair of electrodes so that both electrodes simultaneously are of the same charge at each moment and providing the fluid in a fluid flow rate matching the magnitude of the voltage. More specifically, the method creates conditions for creating a configuration of the first independent semi arc structure downstream of the electrodes that covers a cross section of the container to a large extent and more specifically may cover a space in the shape of a hemisphere, which in turn creates conditions for ionization of the fluid passing the first arc structure to a large extent.
- the first independent semi arc structure created may comprise a specific type of arcs, that may be called “Ario-arcs” or “Aho discharge” (Arc- Rotary-lonization-Orbitals), having certain characteristics, such as a plurality of arcs, permanency of the arcs and stability of the arcs.
- the first arc structure may be configured to cover a substantial part of the container in a cross section so that when a stream of atoms/molecules in the fluid flow is conveyed past the electrodes, it makes it difficult for the atoms to pass without getting ionized.
- the discharges from the electrodes form “half-arcs” extending from each one of the electrodes to less than or about half-way into the container with regard to a central axis of the container affecting substances passing through the space between the two electrodes.
- At least one arc at a time in the first independent semi arc structure is permanent and continuous.
- the first independent semi arc structure comprises an arc having a zigzag shape in the form of saw teeth due to the electrons push each other away due to the same electric charge.
- the ionization energy availability is higher (ionization happens relatively easier there) because the electrons are more excited there.
- the wording “emit” electrons/positrons from the electrodes may alternatively be termed “discharge” electrons/positrons.
- the method comprises the step of creating the plurality of independent semi arc structures so that it comprises a first set of semi-arcs that are deflected downstream from the first pair of electrodes by the fluid flow and a second set of semi-arcs extending upstream from the first pair of electrodes by the effect of the magnetic field.
- magnetic bridges paths made by the magnets for the electrons
- the magnetic field has an effect on the electrons in the fluid flow passing by so that the electrons are maintained for a few more split seconds in the ionization area. This provides better paths for the creation of a greater number of arcs the first arc structure. Further, by applying a magnetic field a similar yield may be achieved with lower power consumption.
- the method comprises the step of charging each one of the electrodes in the first pair of electrodes so that they are simultaneously negatively or positively charged creating such a potential difference between each one of the electrodes and an environment of the respective electrode that electric discharges takes place from each one of the electrodes, wherein the method comprises the step of conveying the fluid in a gaseous state inside the container past the first pair of electrodes in the environment of the respective electrode during said charging for ionization of the fluid.
- the method may be used for production of ROS (reactive oxygen species) and some other substances.
- the fluid used may here be air.
- the fluid comprises a mixture of ROS (reactive oxygen species), such as Oxygen (02), Superoxide anion (02-), Peroxide (02-2), Hydrogen Peroxide (H2O2), Hydroxyl radical (OH) and Hydroxyl ion (0H-).
- ROS reactive oxygen species
- H2O2 Hydrogen Peroxide
- H2O2 Hydroxyl radical
- Hydroxyl ion a homogenous mixture of the ROS
- the mixture is substantially stable and radicals that have a relatively higher half-life It may be maintained stable to be used in a downstream application, such as a tank for cleaning of an industrial process fluid.
- the process fluid is a cutting fluid
- the method comprises the step of supplying a magnitude of the voltage to the first pair of electrodes that selective ionization is achieved.
- Oxygen ionizes at a lower energy than Nitrogen. More specifically, an ionization energy of about 1400 kJ/mol would ionize Oxygen and not Nitrogen.
- the ionization energy is carefully controlled for a specific application for preferably ionizing all the elements to Oxygen and not Nitrogen and more atomic numbers, to avoid producing NOx (NO3 - HNO3) and subsequently odour.
- the voltage range supplied to the electrodes is chosen in a way that the available energy for the ionization of the gaseous elements is high enough to ionize oxygen but not high enough to ionize the Nitrogen.
- the method comprises the step of supplying such a magnitude of the voltage to the electrodes that the first semi arc structure comprises a plurality of arcs.
- the method comprises the step of supplying such a magnitude of the voltage to the electrodes that the first semi arc structure comprises a plurality of arcs.
- the magnitude of the voltage and the fluid flow rate are matched so that at least one semi-arc in the first arc structure is permanent/continuous.
- the flow direction also affects bending of the semi arcs in a downstream direction.
- the inner wall of the elongated fluid container has a diameter in a range of 10-30 mm and preferably in the range of 15-25 mm.
- the electrodes in the first pair of electrodes are arranged at a distance from each other in a range of 2-15 mm, especially in a range of 2-10 mm and preferably in a range of 2-4 mm.
- the distance between the electrodes is in the range of 2-4 mm.
- the electrodes are provided with chemical coatings with materials such as nano-Titanium dioxide or nano-platinum or any other material that increases the corrosion resistance of the electrodes.
- each one of the electrodes in the first pair has an elongated shape with a pointy end and wherein the electrodes are arranged so that the pointy ends face each other.
- the electrodes in the first pair of electrodes are straight and of a rod-type with a pointy end (like a needle) and arranged in-line with each other.
- each one of the electrodes in the first pair has an elongated shape with a pointy end defining an angle in a range of 20-35°.
- Such sharp tips of the electrodes creates conditions for creating several paths of electrons emitted from the angled surface of the electrode at longitudinally spaced locations.
- the electrodes in the first pair of electrodes are identical.
- the method comprises the step of supplying such a voltage to the first pair of electrodes that both electrodes have either positive or negative charge simultaneously.
- both electrodes in the first pair of electrodes are positively charged and therefore emit electrons, wherein the fluid flow in the environment of the respective electrode may be regarded to form a negatively charged region for interaction with the emitted electrons from the electrodes so that a first arc structure is created projecting from each one of the electrodes for ionization of the fluid.
- a transformer is connected with one of its output terminals to a first electrode in the first pair (and possibly with another one of its terminals to a first electrode in a second pair) for supplying the voltage.
- AC power from a power source goes to the transformer.
- the transformer turns the voltage from an input of 12 to 220 volts) with a frequency of 50 to 60 Hz to 2*7.5 kV for each pole (associated to one of the electrodes) with a frequency of about 20 kHz by changing the electric charge of the electrodes (AC current).
- supplying power to the electrodes with high frequency and high voltage creates conditions for causing a permanent semi arc structure which is strong enough not to be adversely affected by the passing fluid flow (up to 80 litres per minute).
- the higher frequency (of transformer) from 10 the greater number of arcs are shaped and seen.
- the method comprises the step of supplying the fluid flow to the container with a fluid flow rate in a range of 5-40 litre/min and preferably in a range of 8-20 litre/min. It creates conditions for an arc structure that has the following features: a high number of semi arcs, high geographical/spatial coverage of semi arcs in the vicinity of each electrode environment per cross section of the container and an increase in ionization probability (exposure of fluid to semi arc) and ionization efficiency as a result.
- the method comprises the step of supplying the fluid flow to the inlet of the container in a pulsed manner.
- liquids for example hardening liquids
- AOP aeration processes
- Pause/pulse ratio is the pause time divided by pulse time which gives a sense of effective exposure (artificial dosage boost for the oxidant created by means of the ionization), where Pulse time is the duration at which the air is being pumped into the input of container/reactor, and subsequently from the output of the reactor to the tank downstream (for liquid applications areas in industry). Pause time is the duration at which the pump has stopped pumping the air to the container/reactor (a lag for releasing the fluid to the tank downstream). Adding this lag would be beneficial for the increase of contact/residence time in the container/reactor but there is a limit to it.
- Acquiring low frequency pulsing may be achieved by means of pneumatic components or special valves.
- the method comprises the step of supplying the fluid flow in a pulsed manner to the inlet of the container via a pulsing duration in a range of 0,25-3,0 seconds with a pause in between consecutive pulses of 0,25-10,0 seconds, especially via a pulsing duration in a range of 0,4-1 ,0 seconds with a pause in between consecutive pulses of 0, 5-5,0 seconds and more particularly via a pulsing duration at about 0,5 seconds with a pause in between consecutive pulses of about 1 ,5 seconds.
- the pulsing affects the arcs to greater thickness compared to as if there were no pulsing. Thus, the pulsing creates conditions for a higher ionization efficiency.
- a further effect of the pulsing is that for generating the same yield of oxidants, a lower volume of air is required as feed to the container, which provides for cost efficiency.
- a lag of 1 ,5 second of pausing and 0,5 seconds of pulsing gives a sweet spot because during the pause time any foam will have the time to reside (liquid gets enough time to rest and reduce the original level in the main tank while at the same time the ionization contact time and thereby ionization efficiency is increased).
- a magnetic field generating arrangement is arranged outside of the container and adapted to provide the magnetic field in the vicinity of the first pair of electrodes for affecting the first arc structure.
- the method comprises the step of conveying at least a first portion of the fluid along a helical path inside of the container.
- Such a fluid flow pattern allows the fluid to spend more time in the container, which creates conditions for increasing the combination rate and the likelihood of collisions and therefore ionization rate which leads to a higher ionization efficiency. Further, such a flow pattern may cause the fluid flow to arrive at the first arc structure with a direction angled in relation to a longitudinal direction of the container which in turn may cause more molecules to be ionized by the first arc structure. Further, such a flow pattern may cause turbulence in the fluid flow, which in turn may cause more molecules to be ionized by the first arc structure.
- the method comprises the step of conveying at least a second portion of the fluid along a substantially straight path inside of the container towards a position between the first pair of electrodes.
- the second portion of the fluid may in this way contribute substantially to push the first arc structure downstream and thereby create conditions for a high coverage of the cross section of the container and thereby a high ionization efficiency.
- the term “semi arc” structure may be regarded as an arc structure between the prior art arc structures of Glow corona and streamer corona.
- the semi arc structure introduced by this art does not have a ground pole and/or dielectric, it does not fall within the category of corona discharge and therefore it has a specific shape by a specific arrangement of magnetic field (but according to the vision error it may look like a complete arc extending between the electrodes).
- the method comprises the step of providing a pressure in the container above 1 ,1 bars during the supply of voltage to the electrodes.
- the method comprises the step of providing a pressure in the container above 1 ,5 bars during the supply of voltage to the electrodes.
- the method is operated with a pressure in the container in a range of 1 ,5- 2,0 bar. A pressure level above 1 ,1 bars increases the likelihood of more collisions of matter and therefore a higher ionization efficiency.
- the pressure required in the container is further dependent on a downstream application, wherein the pressure level may be up to 10 bars.
- the pressure in the container is greater than the atmospheric pressure during the charging of the electrodes, wherein an increased constant pressure in a given volume in the vicinity of each electrode leads to higher chance of collision (of molecules, ions, atoms, electrons and positrons) and ionization around the respective electrode.
- the method comprises the step of radiating the fluid in the container via a light source.
- the light-matter interaction provides for the phenomenon of Pair Production.
- the interaction between the photons from the light source with the substances passing by the area leads to emission of waves with different ranges of wavelength depending on the light source.
- the generated waves enhance the ionization efficiency.
- electrons and positrons are released, and they contribute to the ionization reactions. And the yield per power consumption is increased.
- the light source is preferably arranged outside of the container. It creates conditions for a long life of the light source since it will not be subjected to the interior environment (friction and heat) of the container.
- the radiation by the light source may radiate the fluid flow provided the container wall is transparent, such as made of glass.
- the light source may be light-emitting diodes (LED) adapted for radiating an ultraviolet (UV) light.
- LED light-emitting diodes
- UV ultraviolet
- a Xenon lamp may be used.
- the light sources may be adapted to provide a light intensity in a range of 100- 5600 Lumen. The light intensity may be matched to the magnitude of the voltage supplied to the electrodes, wherein a lower voltage may be compensated by a higher light intensity for a certain ionization effect.
- the light source may contribute to a significantly increased ionization efficiency. Tests have shown results of an increased ionization efficiency of up to 40%.
- the ionization device comprises a second pair of electrodes arranged in the container at a distance from the first pair of electrodes. According to one example the distance between the adjacent electrode pairs is at least 30 mm.
- a second pair of electrodes are arranged in the container opposite each other and at a distance from each other, wherein the second pair of electrodes are arranged at a distance from the first pair of electrodes downstream of the first pair in a fluid flow direction in the container, wherein the method comprises the step of charging each one of the electrodes in the second pair of electrodes so that they are simultaneously positively charged or negatively charged and synchronizing the charging of the first pair of electrodes in relation to the second pair of electrodes so that the second pair of electrodes are negatively charged when the first pair of electrodes are positively charged and vice versa.
- the second pair of electrodes are arranged at such a distance from the first pair of electrodes sufficient to avoid interference of arc structures of adjacent electrode pairs in the frequency synchronization. Further, the distance is preferably sufficient for to avoiding any direct complete arc between two electrodes of opposite charge to avoid any increase in amper load.
- the method comprises the step of connecting a first electrode in the first pair of electrodes and a first electrode in the second pair of electrodes to opposite terminals of a first power supply and connecting a second electrode in the first pair of electrodes and a second electrode in the second pair of electrodes to opposite terminals of a second power supply.
- Fig. 1 is a schematic view of a device for ionization of a fluid according to a first embodiment, wherein a container is shown in a cross section,
- Fig. 2 is a perspective view of a container in fig. 1 ,
- Fig. 3 is an enlarged view of a first pair of electrodes in fig. 1 ,
- Fig. 4 is a schematic top view of a first arc structure created in the container according to fig. 1 and 2 by the first pair of electrodes,
- Fig. 5 is a schematic front view of the first arc structure created in the container according to fig. 1 and 2 by the first pair of electrodes,
- Fig. 6 is a schematic view of a device for ionization of a fluid according to a second embodiment, wherein a container is shown in a cross section,
- Fig. 7 is a perspective view of a fluid flow directing unit provided in the container in fig. 6
- Fig. 8 is a front view of the fluid flow directing unit in fig. 7,
- Fig. 9 is a schematic view of a device for ionization of a fluid according to a third embodiment, wherein a container is shown in a cross section,
- Fig. 10 is a cross section view of the container as in fig. 9 indicating the fluid flow
- Fig. 11 is a perspective view of the device for ionization of a fluid according to the first embodiment
- Fig. 12 is a perspective view of a section of a magnetic field generating arrangement provided around the container in fig. 11 ,
- Fig. 13 is a schematic and partly cut front view of the magnetic field generating arrangement in fig. 11 ,
- Fig. 14 is a schematic view in cross section of the container in fig. 11 showing parts of the magnetic field generated by the magnetic field generating arrangement
- Fig. 15 is a perspective view of a container according to an alternative design relative to the container in fig. 2,
- Fig. 16 is a schematic view of the container as in fig. 17 in cross section applied in an ionization device according to a fourth embodiment indicating the fluid flow in operation
- Fig. 17 is a perspective view of a device for ionization of a fluid according to a fifth embodiment
- Fig. 18 is a graph indicating an example of a pulsed flow supplied to the ionization device
- Fig. 19 is a graph indicating available energy for ionization for different pause/pulse ratios
- Fig. 20 is a partly cut and exploded perspective view of an arrangement for ionization of a fluid
- Fig 21 is a schematic view of a device for ionization of a fluid according to an alternative to the first embodiment.
- Fig. 1 is a schematic view of a device 2 for ionization of a fluid in a gaseous state according to a first embodiment.
- the fluid in gaseous state will in the following be referred to as a gas.
- the gas is air.
- the ionization device 2 comprises a container 4.
- the container 4 is illustrated in a cross section in a horizontal plane through its centre axis.
- the container 4 has an elongated shape.
- the container 4 has a rounded cross section shape and more specifically a circular cross section shape. Further, the cross section of the container 4 is constant along a significant portion of the length of the container. Further, ends 6, 8 of the container 4 in the longitudinal direction have a rounded and more specifically half-spherical shape.
- a wall 10 of the container 4 defines an inner chamber 12.
- An inner surface of the wall 10 of the elongated container 4 has a diameter of about 20 mm.
- Fig. 2 is a perspective view from above of the container 4 in fig.
- the container wall 10 is formed in glass.
- the container may be formed in two identical container parts with a delimitation in a plane through a center axis of the container 4.
- the container 4 is formed in one-piece with a cap at one end.
- an inlet 14 is provided at a first end 6 of the container 4 in its longitudinal direction and an outlet 16 is provided at a second end 8 of the container 4 in its longitudinal direction for conveying a gas flow from the inlet 14 to the outlet 16.
- Each one of the inlet 14 and the outlet 16 has a generally tube shape.
- An axis of the inlet 14 has a main direction in parallel with the longitudinal direction of the container 4 and is arranged in-line with a longitudinal centre axis 17 of the container.
- an axis of the outlet 16 has a main direction in parallel with the longitudinal direction of the container 4 and is arranged in-line with the longitudinal centre axis 17 of the container.
- the container 4 has a length in a range of 100 - 120 mm excluding the inlet 14 and outlet 16.
- the ionization device 2 further comprises a first pair 18 of electrodes 20, 22 arranged in the container 4 opposite each other and at a distance from each other.
- the electrodes 20, 22 are arranged perpendicularly relative to the longitudinal direction of the container 4. Further, the container 4 is arranged in a way that its longitudinal direction is in a horizontal plane. More specifically, the electrodes 20, 22 are arranged so that they extend in a horizontal plane.
- the electrodes 20, 22 are shown in an enlarged view in figure 3.
- the electrodes 20, 22 are arranged at a distance y from each other in a range of 2-4 mm. Further, each one of the electrodes 20, 22 in the first pair 18 has an elongated shape with a circular cross section and a pointy end 24, 26.
- each one of the electrodes 20, 22 in the first pair 18 has an elongated shape with a pointy end 24, 26 defining an angle a in a range of 20-35°.
- each one of the electrodes 20, 22 has a sharp tip.
- the electrodes 20, 22 in the first pair 18 are straight and arranged in-line with each other.
- the electrodes 20, 22 in the first pair 18 are in the form of rods.
- the electrodes 20, 22 in the first pair 18 may be termed needle electrodes.
- the electrodes 20, 22 in the first pair 18 are formed in a metallic material and more precisely in the material tungsten (also called wolfram) as an example.
- the charged parts when charging an element, the charged parts accumulate in any sharp edges of the element. Accordingly, charged parts will be highly accumulated in the sharp edge of the electrode 20, 22. In other words, charged parts will have a very high density in the sharp edge, wherein an electric field will be strong in a region of the sharp edge. Further, a highly charged electrode (positive or negative) will have a very high potential in relation to the environment (adjacent the electrode). The potential difference between the electrode and its adjacent environment/surroundings will result in ionization of the matter in the environment in the vicinity of the respective electrode leading to exchange of electrons/positrons in cycles from higher potential area to lower potential area and vice versa and different types of electric discharge from the electrode may take place. This phenomenon may be similar to a Tesla coil.
- the design of the electrodes 20, 22 with sharp tips especially with an acute angle from 20 to 35 degrees (preferably 22 degrees to create a greater number of semi arcs as well as increasing the life span of the electrodes) 24, 26 creates good conditions for creating electric discharges in the form of electric semi-arcs from the surface of the tip having an inclination relative to the longitudinal direction of the elongate electrode. More specifically, a first set of arcs may be created extending from the electrode tip in a downstream direction. Further, a second set of arcs may be created extending from the electrode tip in an upstream direction. It will be described in more detail below in association with fig. 4 and fig. 5.
- the ionization device 2 further comprises a power supply 28, 50 adapted for charging each one of the electrodes 20, 22 in the first pair 18 of electrodes so that they have the same charge simultaneously. In this way, such a potential difference between each one of the electrodes 20, 22 and an environment of the respective electrode may be created that electric discharges take place simultaneously from each one of the electrodes. Further, the fluid is conveyed in a gaseous state inside the container past the first pair 18 of electrodes in the environment of the respective electrode 20, 22 during said charging for ionization of the fluid.
- the power supply 28, 50 comprises two transformers 28, 50, which are adapted to provide an alternating current of a certain frequency to the electrodes. Accordingly, the power supply 28, 50 is adapted to supply such a voltage to the first pair 18 of electrodes that both electrodes 20, 22 are positively charged at the same time and therefore emit electrons. It is schematically shown in a top view in figure 4, wherein the arrows 30, 31 indicate paths of electrons emitted from the tips of the electrodes 20, 22. Further, the container 4 is adapted for conveying the gas in a flow past the first pair 18 of electrodes, wherein the gas flow may be regarded as a negatively charged region 32 between the electrodes 20, 22 for interaction with the emitted electrons from the electrodes so that a first arc structure 34 may be created.
- a plurality of electric semi-arcs project from each one of the electrodes 20, 22 for ionization of the gas.
- Fig. 5 is a schematic front view of the first arc structure 34 created in the container according to fig. 4. Further, each arc has a zigzag shape in the form of saw teeth.
- each transformer 28, 50 comprises a primary winding and a secondary winding.
- Each transformer turns the voltage from an input of 12 to 220 volts with a frequency of 50 to 60 Hz to 2*7.5 kV for each pole (associated to one of the electrodes) with a frequency of about 20 kHz by changing the electric charge of the electrodes (AC current).
- each transformer 28, 50 comprises a frequency converter 29, 51 where one of the ground wire functions is to reduce noise.
- the zigzag arc shapes shown in the fig. 4 and fig. 5 are only schematically shown. Especially, the semi-arcs are magnified and much bigger than the real size in relation to the size of the electrodes 20, 22. In reality the zigzags are in microscopic scales. Also, their plurality is much higher than the number of the arcs shown in the figures.
- Each one of the transformers 28, 50 is adapted for supplying an output voltage at a magnitude of around 7,5 kV via each one of its output terminals. Further, each one of the transformers 28, 50 is adapted for supplying the output voltage in a frequency about 20 kHz, wherein the polarity of the electrodes connected to the two output terminals/poles of one transformer will change very fast (every 0.00005 second).
- the ionization device 2 further comprises a magnetic field generating arrangement 304. It will be described in more detail below in association with fig. 11 -14.
- the magnetic field generating arrangement 304 comprises a first section 305 arranged upstream of the first pair 18 of electrodes in the longitudinal direction of the container, wherein the first independent semi- arc structure 34 comprises a first set of semi-arcs 334 that are deflected downstream from the electrodes by the gas flow and a second set of semi-arcs 336 extending upstream from the electrodes 20, 22 by the effect of the magnetic field of the first magnetic field generating section 305.
- the first set of arcs 334 and the second set of arcs 336 are shown in fig. 4.
- the second set of arcs 336 comprises fewer arcs than the first set of arcs 334 and that the arcs in the second set of arcs 336 have a smaller extension in the longitudinal direction of the container relative to the first set of arcs 334.
- the magnetic field generated by the first magnetic field generating section 305 creates bridges/pathways for arcs also upstream of the electrode pair 18, see arrows 330 and 331 indicating the electrons emitted from the electrodes 20, 22.
- the second set of arcs 336 comprises a plurality of arcs between the electrodes 20, 22. Further, the arcs have a zigzag/saw-tooth shape.
- each one of the electrodes 20, 22 is arranged in an opening 36, 38 through the container wall 10.
- the container comprises a pipe-shaped portion 40, 42 extending in a transverse direction relative to the longitudinal direction of the container 4. More specifically, the pipe-shaped portion 40, 42 extends perpendicularly relative to the longitudinal direction of the container 4.
- the pipe-shaped portions 40, 42 define the openings 36, 38. More specifically, the pipe-shaped portions 40, 42 are formed in one-piece with the container 4. More specifically, the electrodes 20, 22 are arranged in the pipe-shaped portions 40, 42 in a gas tight manner for avoiding leakage.
- the ionization device 2 further comprises a second pair 44 of electrodes 46, 48 arranged in the container 4 in a similar way as has been described above with regard to the first pair 18 of electrodes 20, 22.
- the second pair 44 of electrodes 46, 48 are arranged at a distance from the first pair 18 of electrodes 20, 22 in the longitudinal direction of the container 4.
- Each one of the first pair 18 of electrodes 20, 22 and the second pair 44 of electrodes 46, 48 are arranged at the portion of the container 4 having a constant cross section with a distance between the adjacent electrode pairs of about 30 mm.
- the power supply 28,50 is adapted for charging each one of the electrodes 46, 48 in the second pair 44 of electrodes so that they have the same charge at the same time.
- the power supply 28, 50 is adapted to supply such a voltage also to the second pair 44 of electrodes that both electrodes 46, 48 are positively charged at the same time and therefore emit/exchange electrons/positrons.
- the arrangement is adapted to synchronize the charging of the first pair 20 of electrodes 20, 22 in relation to the second pair 44 of electrodes 46, 48 so that the second pair 44 of electrodes 46, 48 are negatively charged when the first pair 20 of electrodes 20, 22 are positively charged and vice versa.
- the two transformers 28, 50 are of the same natural frequency and identical. By arranging the transformers 28, 50 adjacent each other in relative close proximity, their frequency cycles will become synced eventually in a steady state since they would influence each other during operation, due to Hertz and frequency laws. Accordingly, they can work with a synced frequency permanently. Accordingly, this synchronization happens spontaneously as soon as the transformers are turned on. According to an alternative, means may be provided to actively control the synchronization, such as arranging a oneway diode (a diode that synchronize the direction of the current in the same direction - the sinus or cosinus wave) in the path of each exit terminal.
- a oneway diode a diode that synchronize the direction of the current in the same direction - the sinus or cosinus wave
- each one of the transformers has two output terminals/poles, which are connected to the electrodes 20, 22; 46, 48 for charging the electrodes.
- the potential reaches an amount that is sufficient for electric discharge, the above-mentioned phenomenon of electric discharge will take place. More specifically, a first electrode 22 in the first pair 18 of electrodes and a first electrode 46 in the second pair 44 of electrodes are connected to opposite terminals of a first transformer 28. Further, a second electrode 20 in the first pair 18 of electrodes and a second electrode 48 in the second pair 44 of electrodes are connected to opposite terminals of a second transformer 50.
- the ionization device 2 further comprises a gas flow pumping means 52 for supplying the gas flow from a tank 54 of compressed air to the inlet 14 of the container 4. More specifically, the gas flow pumping means 52 is adapted for supplying the gas flow at such a rate to the container 4 that it is conveyed past the first pair 18 of electrodes 20, 22 so that at least parts of the first arc structure are deflected downstream from the electrodes 20, 22 in a direction of the gas flow. More specifically, the gas flow pumping means 52 is adapted for supplying the gas flow to the container with a gas flow rate in a range of 10-12 litre/min.
- the device is not limited to an application of a tank for supply of the gas. It can be a compressor using ambient air or an industrial blower, etc.
- the gas flow pumping means 52 is adapted for supplying the gas flow to the inlet 14 of the container 4 in a pulsed manner.
- the method comprises the step of supplying the gas flow in a pulsed manner to the inlet 14 of the container 4 via a pulsing duration at about 0,5 seconds with a pause between consecutive pulses of about 1 ,5 seconds, see graph in fig. 18.
- the outlet 16 of the container 4 is in fluid communication with a tank 56 comprising a process liquid, such as industrial water or wastewater that have strong aerobic or anaerobic bacteria.
- a line connecting the outlet 16 with the tank 56 ends in a lower region of the tank 56 so that the ionized gas may be supplied below a surface of the process liquid in order to separate inorganic or mineral substances such as metal by sedimentation or kill the bacteria.
- the tank 56 is replaced with another device that relates to air purification.
- the ionized gas exiting the outlet can be directly sprayed to a room to eliminate virus, bacteria, odour, etc.
- a further effect of the pulsing is that a less amount of unionized air (02) per volume of output is sent to the tank 56.
- Unionized air may risk support the aerobic bacteria to grow and it will compete with the ionized portion of the air. With pulsing, more ionized air compared to unprocessed air (02) is sent in the mixture per volume of output fluid.
- Fig. 6 is a schematic view of a device 102 for ionization of a gas according to a second embodiment.
- the ionization device 102 according to the second embodiment has many parts in common with the ionization device 2 according to the first embodiment. For ease of presentation, only the main differences will be explained below.
- the ionization device 102 comprises a nozzle 104 arranged in the inlet 14 of the container 4.
- the nozzle 4 is adapted for being rotated around an axis in parallel with an axis of the inlet 14 for conveying the gas along a helical path inside of the container 4.
- the nozzle 104 comprises an end portion facing the container inner chamber 12 having radially external surfaces defining a generally circular cross section shape that is matched to a dimension of an inner surface of the inlet 14. Further, the nozzle 104 comprises peripheral through-going channels adapted for creating a helical flow inside of the container 4.
- the ionization device 102 further comprises a first fluid flow directing unit 106 arranged in the container 4.
- the first fluid flow directing unit 106 is arranged downstream of the first pair 18 of electrodes. More specifically, the first fluid flow directing unit 106 is arranged downstream of the second pair 44 of electrodes.
- the first fluid flow directing unit 106 is adapted to compensate for a pressure drop throughout the length of the container 4 by providing a hindrance to the gas flow.
- a second arc structure created by the second pair 44 of electrodes may be as strong and disciplined as the first arc structure created by the first pair 18 of electrodes.
- the pressure in the container 4 is maintained or at least not significantly reduced thanks to the first fluid flow directing unit 106.
- a distance between the molecules is decreased and the retention time in the container is increased and consequently the ionization efficiency increases.
- maintaining the pressure at a relatively high level may be important for the delivery of the fluid to the tank 56, since the liquid in the tank provides a counterpressure that needs to be overcome.
- Fig. 7 is a perspective view of the first fluid flow directing unit 106 provided in the container 4 in fig. 6.
- Fig. 8 is a front view of the first fluid flow directing unit 106 in fig. 7.
- the first fluid flow directing unit 106 comprises at least one peripheral fluid flow guide channel 108 having an outlet 110 circumferentially displaced relative to an inlet 112 for turning a first part of an incoming fluid flow.
- the first fluid flow directing unit 106 further comprises a central fluid flow guide channel 114 with an extension substantially in parallel with the longitudinal direction of the elongated container 4 for guiding a second part of the incoming fluid flow substantially in the longitudinal direction of the elongated container 4.
- the first fluid flow directing unit 106 comprises a plurality of circumferentially spaced peripheral fluid flow guide channels 108, 118, 120. Further, the at least one peripheral fluid flow guide channel 108, 118, 120 has a substantially larger dimension than the central fluid flow guide channel 114 for conveying a substantially larger part of the incoming fluid flow.
- first fluid flow directing unit 106 has a rounded peripheral surface 122 substantially corresponding to a curvature of the rounded inner surface of the container 4, wherein the first fluid flow directing unit 106 is arranged in the container 4 so that the rounded surfaces are in contact with each other in a fluid tight manner.
- the first fluid flow directing unit 106 is rigidly connected, such as via weld seams, to the container 4 in an operational position.
- the first fluid flow directing unit 106 may be formed in a material with the same or similar expansion coefficient as the container wall 10.
- the first fluid flow directing unit 106 is formed in glass. It creates conditions for rigidly connecting the first fluid flow directing unit 106 to the container 4 in the operational position via welding.
- the first fluid flow directing unit 106 comprises a body 124 defining the at least one peripheral fluid flow guide channel 108, 118, 120 and the central fluid flow guide channel 114. More specifically, the first fluid flow directing unit 106 is formed by a one-piece body 124.
- the at least one peripheral fluid flow guide channel 108, 118, 120 is open in a radial direction of the first fluid flow directing unit 106. More specifically, at least one peripheral fluid flow guide channel 108, 118, 120 is closed in the radial direction by the wall 10 of the container 4 in figure 6.
- the first fluid flow directing unit 106 comprises sections 126, 128, 130 circumferentially between adjacent peripheral fluid flow guide channels 108, 118, 120.
- a radially outer surface of these sections 126, 128, 130 of the first fluid flow directing unit 106 defines a circular shape of substantially the same dimension as the inner surface of the elongated container 4.
- a wall of each one of the sections 126, 128, 130 faces in the longitudinal direction of the container 4 for blocking parts of the fluid flow.
- a total area of the walls of the sections 126, 128, 130 is substantially the same as a cross section area defined by the peripheral fluid flow guide channels 108, 118, 120.
- the first fluid flow directing unit 106 is adapted for conveying at least a first portion of the fluid along a helical path inside of the container 4 via the at least one peripheral fluid flow guide channel 108, 118, 120. Further, the first fluid flow directing unit 106 is adapted for conveying at least a second portion of the fluid along a substantially straight path inside of the container via the central fluid flow guide channel 114.
- Fig. 9 is a perspective view of a device 202 for ionization of a gas according to a third embodiment.
- the ionization device 202 according to the third embodiment has many parts in common with the ionization device 102 according to the second embodiment. For ease of presentation, only the main differences will be explained below.
- the ionization device 202 comprises a second fluid flow directing unit 206.
- the two fluid flow directing units 106, 206 are arranged spaced from each other in the longitudinal direction of the container 4. More specifically, the two fluid flow directing units 106, 206 are arranged on opposite sides of the first pair 18 of electrodes 20, 22. More specifically, the two fluid flow directing units 106, 206 are arranged on opposite sides of the first pair 18 of electrodes 20, 22 and the second pair 44 of electrodes 46, 48. More specifically, the second fluid flow directing unit 206 has a design similar to the design of the first fluid flow directing unit 106 with the difference that the at least one peripheral fluid flow guide channel is turned circumferentially in an opposite direction.
- the two fluid flow directing units 106, 206 are identical in dimension but have a mirrored design for the change of direction of the fluid flow.
- a first one of the two fluid flow directing units 106, 206 is adapted to turn the fluid flow in a clockwise direction and the other one is adapted to turn the fluid flow in a counter clockwise direction.
- Fig. 10 is a schematic top view of the ionization device 202 as in fig. 9 indicating the fluid flow paths.
- the peripheral fluid flow guide channel 108, 118, 120 of the upstream first fluid flow directing unit 206 are adapted to convey a first part of the fluid flow in a helical path 208 inside the container 4.
- the central fluid flow guide channel 114 is adapted to convey a second part of the fluid flow in a substantially straight path 210 inside of the container in parallel with the longitudinal direction of the container 4.
- Fig. 11 is a perspective view of parts of the ionization device 2.
- the magnetic field generating arrangement 304 is adapted for generating a magnetic field in the vicinity of the first pair 18 of electrodes for affecting the arc structures for supporting the ionization of the gas.
- the magnetic field generating arrangement 304 is arranged outside of the container 4. It creates conditions for a long life of the magnetic field generating arrangement 304 since it will not be subjected to the interior environment (friction and heat) of the container 4.
- the magnetic field generating arrangement 304 comprises at least one magnetic field generating unit 310.
- the magnetic field generating unit 310 is formed by an electromagnet 308.
- the electromagnet 308 comprises a coil adapted for the passage of electric current.
- the electromagnet 308 is arranged so that an axis of the coil extends in a radial direction in relation to the container 4.
- the magnetic field generating unit 310 is formed by a permanent magnet.
- the magnetic field generating unit is adapted for providing a magnetic strength in a range of 20-180 and especially in a range of 20-40 N.
- the first magnetic field generating section 305 comprises a plurality of circumferentially spaced magnetic field generating units 310 around the container.
- the first magnetic field generating section 305 comprises six circumferentially spaced magnetic field generating units 310 around the container.
- the number of magnetic field generating units 310 may of course be altered depending on the application.
- each one of the circumferentially spaced magnetic field generating units 310 is formed by an electromagnet.
- one or several or all of the circumferentially spaced magnetic field generating units 310 may be formed by a permanent magnet.
- the first magnetic field generating section 305 comprises a ringshaped support 312 extending around the container, wherein the ring-shaped support is adapted to hold the circumferentially spaced magnetic field generating units 310 in their operational positions.
- Each one of the circumferentially spaced magnetic field generating units 310 is arranged so that its axis extends radially outwards from the ring-shaped support 312.
- Fig. 13 is a partly cut front view of the ionization device 2 in fig. 1.
- the ring-shaped support 312 is arranged in close proximity to an outer wall surface of the container 4. More specifically, the ring-shaped support 312 has an inner diameter that is somewhat larger than an outer diameter of the container 4.
- the magnetic field generating arrangement 304 comprises a second section 307, which is arranged outside of the container and downstream of the first pair 18 of electrodes in the longitudinal direction of the container 4, wherein the second magnetic field generating section 307 is adapted for generating a magnetic field in the vicinity of the first pair of electrodes for stabilizing the first arc structure. More specifically, the magnetic field created by the second magnetic field generating section 307 is adapted for disciplining the first set of arcs and give them a more coherent arrangement. In other words, the disciplining of the arcs means that the arcs form a more symmetric pattern with certain spacings etc.
- the magnetic field created by the second magnetic field generating section 307 effects the first set of arcs to increase the quantity of the arcs as well as an increased thickness of the arcs.
- the second magnetic field generating section 307 is similar in construction and functionality as the first magnetic field generating section 305.
- the magnetic field generating arrangement 304 comprises a third section 309, which is arranged outside of the container and upstream of the second pair 44 of electrodes in the longitudinal direction of the container 4.
- the third magnetic field generating section 309 is adapted for generating a magnetic field in the vicinity of the second pair 44 of electrodes similar to how the first magnetic field generating section 305 is adapted for generating the magnetic field in the vicinity of the first pair 18 of electrodes and will therefore not be described in any further detail here.
- Fig. 14 is a schematic top view of the magnetic field generating arrangement 304 schematically showing parts 311 of the magnetic fields generated. More specifically, fig. 14 shows the magnetic fields generated by two opposite magnetic field generating units 310. Similar magnetic fields are created by each one of the other two pairs of opposite magnetic field generating units 310.
- Fig. 15 is a perspective view of a container 404 according to an alternative design relative to the container 4 in fig. 2.
- the container 404 differs in relation to the container 4 in fig. 2 in that it has a further outlet 416.
- the further outlet 416 is arranged inclined in relation to the longitudinal direction of the container 404. More specifically, the further outlet 416 is arranged with an angle of its axis in relation to the axis of the outlet 16 in a range of 30- 60° and preferably about 45°. Further, the further outlet 416 is arranged extending from the half-spherical end 8 of the container 404.
- the arrangement of two outlets 4, 404 creates conditions for dividing the ionized gas flow into two separate gas flows to different destinations. According to one example, one of the outlets 16, 416 may be in fluid communication with the inlet 14 for recirculation of a part of the ionized fluid flow.
- Fig. 16 shows an ionization device 402 according to a fourth embodiment comprising the container 404 according to fig. 15. It indicates the fluid flow paths inside of the container 404. More specifically, the design and position of the first fluid flow directing unit 106 is designed for conveying a first part of the fluid towards the axial outlet 16 and a second part of the fluid towards the further second outlet 416.
- the ionization device 402 may as an alternative or complement to the first fluid flow directing unit 106 further comprise means for selective guiding of parts of the fluid flow to the outlets 16, 416.
- the fluid flow selective guiding means is adapted to attract a negatively charged part of the flow to the further outlet 416. It may be formed by a further electrode acting as a cathode. Since electrons has a negative charge and some of the ionized molecules/atoms are positively charged, the cathode may attract the negatively charged part of the flow to the further outlet 416 and it can be used for another purpose (for example returning to the inlet 14 or for other purposes). In this way, the axial main output (the target ionization) in the axial outlet 16 is more purified.
- an anode may be used to absorb the positively charged part of the flow depending on the purpose.
- Fig. 17 is a schematic and partly cut perspective view of parts of an ionization device 602 according to a fifth embodiment.
- the ionization device 602 according to the fifth embodiment has many parts in common with the ionization device 2 according to the first embodiment. For ease of presentation, only the main differences will be explained below.
- the ionization device 602 comprises at least one light source 504, 506, which is adapted to subject the gas flow in the container for radiation and thereby support the ionization of the gas.
- the light-matter interaction provides for the phenomenon of Pair Production.
- the light source 504, 506 is in the shape of a strip extending in the longitudinal direction of the container 4.
- the light source 504, 506 strip has a main extension along a straight line. More specifically, two light sources 504, 506 are arranged opposite each other, ie spaced with 180°. More specifically, the two light sources 504, 506 are arranged so that their longitudinal directions are in parallel with each other. More specifically, the strip shaped light source extends along a substantial part of the container 4 and in the shown example substantially along its complete length.
- the light source 504, 506 is arranged outside of the container 4. It creates conditions for a long life of the light source 504 since it will not be subjected to the interior environment (friction and heat) of the container 4. The radiation by the light source 504 may radiate the fluid flow thanks to the fact that the container wall is transparent.
- the at least one light source 504, 506 comprises a plurality of light source units arranged in a spaced relationship in a longitudinal direction of the respective strip.
- the light source 504, 506 may be light-emitting diodes (LED) adapted for radiating an ultraviolet (UV) light.
- a Xenon lamp may be used.
- the light sources 504, 506 may be adapted to provide a light intensity in a range of 100-5600 Lumen. The light intensity may be matched to the magnitude of the voltage supplied to the electrodes, wherein a lower voltage may be compensated by a higher light intensity for a certain ionization effect.
- the light source may be a light bulb instead of a strip. Also other shapes and arrangements of the light source may be applicable.
- the ionization device 602 comprises the magnetic field generating arrangement 304 as in fig. 1.
- the ionization device 602 further comprises a support structure 604 for supporting the container 4, the light sources 504, 506 and the magnetic field generating arrangement 304 in predefined positions. More specifically, the support structure 604 comprises two blocks 606, 608.
- the blocks 606, 608 are adapted to be positioned on top of each other.
- Each block 606, 608 comprises a receptacle 610, 612 in the surfaces adapted to face each other.
- the receptacle 610, 612 has an elongated extension defining a half-circle in cross section for receiving the container 4.
- each block 606, 608 is designed with internal chambers/receptacles for receiving the light sources 504, 506 and the magnetic field generating arrangement 304. Further, each block 606, 608 is provided with through holes 614 in a certain configuration for matching each other in order to receive bolts for securing the blocks 606, 608 to each other. Further, each block 606, 608 may be adapted to also receive the transformers 28, 50.
- Fig. 19 is a graph indicating available energy for ionization for different pause/pulse ratios. As seen in the graph, to any ratio below 3.3 (and more safely below 3) would be beneficial as a pulsing feature. However, 3 is the optimal value. It provides for a highest possible efficiency of ionization while avoiding reaching to 1500 KJ/mol limit (with 2*7.5 kV of 20 kHz of transformation) of available ionization energy. This is thanks to increased contact time during the pause by controlling the flow of the fluid with pulsing.
- Fig. 20 is a partly cut and exploded perspective view of an arrangement 702 for ionization of a fluid.
- the arrangement 702 comprises the ionization device 2 in fig. 1 arranged in a casing 714 that has a generally circular cylindrical outer shape.
- the arrangement 702 comprises a generally flat rectangular wall 718 and wall 720 that is generally half-circular in cross section, which is connected to the flat rectangular wall 718 in a way defining an internal space between the walls 718, 720.
- the ionization device 2 is arranged in the internal space between the walls 718, 720.
- the transformers 28, 50 are arranged on either side of the container 4 in its longitudinal direction and connected to the electrodes 20, 22, 46, 48 as described above. Further, the transformers are located within the internal space between the walls 718, 720.
- Fig 21 is a schematic view of a device 802 for ionization of a fluid according to an alternative to the first embodiment.
- the ionization device 802 differs from the first embodiment in the structure of the transformers 828, 850. More specifically, a secondary mid-point of a secondary winding is connected to earth.
- the invention has been described above for an application of cleaning industrial process liquids.
- the invention may be used for cleaning wastewater, such as municipal wastewater.
- the invention may be used for cleaning air, such as air in buildings.
- the ionized gas may be used for eliminating organic and mineral impurities or pollutants.
- organic matter may be bacteria, viruses, other harmful microorganisms, and some organic chemical substances.
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Abstract
L'invention concerne un procédé d'ionisation d'un fluide, le fluide étant transporté à l'intérieur d'un récipient allongé (4, 404) à l'état gazeux, une surface interne d'une paroi (10) du récipient de fluide allongé ayant une forme circulaire dans une section transversale qui est transversale à une direction longitudinale du récipient, un diamètre interne du récipient (4, 404) étant situé dans une plage allant de 10 à 50 mm, une première paire (18) d'électrodes (20, 22) étant disposée dans le récipient à l'opposé l'une de l'autre et à une certaine distance l'une de l'autre dans une direction transversale du récipient allongé, le procédé comprenant les étapes consistant à fournir une tension à chaque électrode dans la première paire d'électrodes dans une plage de 2 à 15 kV, en particulier dans une plage allant de 5 à 10 kV, et de préférence d'environ 7,5 kV de telle sorte que des décharges électriques se produisent à partir des électrodes pour l'ionisation du fluide, à fournir le fluide à un débit situé dans une plage allant de 5 à 80 litres/min à une entrée du récipient pour dévier au moins une partie (334) des décharges électriques en aval dans une direction d'écoulement de fluide et à fournir un champ magnétique (311) au voisinage de la première paire (18) d'électrodes pour influer sur une structure des décharges pour prendre en charge l'ionisation du fluide.
Applications Claiming Priority (2)
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SE2250530 | 2022-05-02 | ||
SE2250530-9 | 2022-05-02 |
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WO2023214920A1 true WO2023214920A1 (fr) | 2023-11-09 |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013073886A (ja) * | 2011-09-29 | 2013-04-22 | Yamagata Univ | イオナイザー |
WO2014058027A1 (fr) * | 2012-10-11 | 2014-04-17 | シャープ株式会社 | Élément générateur d'ions et appareil générateur d'ions |
US20150248989A1 (en) * | 2013-08-05 | 2015-09-03 | Sharp Kabushiki Kaisha | Ion generation apparatus and electric equipment |
WO2018211309A1 (fr) * | 2017-05-15 | 2018-11-22 | KHORVIN, Masoud | Réacteur d'ionisation à arc électrique et méthode de génération d'ozone à l'aide d'air |
-
2023
- 2023-05-02 WO PCT/SE2023/050419 patent/WO2023214920A1/fr unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013073886A (ja) * | 2011-09-29 | 2013-04-22 | Yamagata Univ | イオナイザー |
WO2014058027A1 (fr) * | 2012-10-11 | 2014-04-17 | シャープ株式会社 | Élément générateur d'ions et appareil générateur d'ions |
US20150248989A1 (en) * | 2013-08-05 | 2015-09-03 | Sharp Kabushiki Kaisha | Ion generation apparatus and electric equipment |
WO2018211309A1 (fr) * | 2017-05-15 | 2018-11-22 | KHORVIN, Masoud | Réacteur d'ionisation à arc électrique et méthode de génération d'ozone à l'aide d'air |
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